Nu Chamaeleontis
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Chamaeleon |
| Right ascension | 09h 46m 20.63010s[1] |
| Declination | −76° 46′ 34.0259″[1] |
| Apparent magnitude (V) | 5.43[2] |
| Characteristics | |
| Spectral type | G8III[3] |
| U−B color index | +0.57[4] |
| B−V color index | +0.89[4] |
| Astrometry | |
| Radial velocity (Rv) | 11.18±0.14[5] km/s |
| Proper motion (μ) | RA: +83.279[1] mas/yr Dec.: −56.443[1] mas/yr |
| Parallax (π) | 17.2608±0.0763 mas[1] |
| Distance | 189.0 ± 0.8 ly (57.9 ± 0.3 pc) |
| Absolute magnitude (MV) | 1.59[2] |
| Details | |
| Mass | 1.64±0.20[2] M☉ |
| Radius | 6.50+0.08 −0.10[1] R☉ |
| Luminosity | 23.9±0.1[1] L☉ |
| Surface gravity (log g) | +3.07±0.15[2] cgs |
| Temperature | 5008+39 −30[1] K |
| Rotational velocity (v sin i) | 1.2±1.0[5] km/s |
| Other designations | |
| CPD−76°598, FK5 2784, HD 85396, HIP 47956, HR 3902, SAO 256658[6] | |
| Database references | |
| SIMBAD | data |
ν Chamaeleontis, Latinized as Nu Chamaeleontis, is a single[7] star in the southern circumpolar constellation of Chamaeleon. It is a yellow-hued star, dimly visible to the naked eye, with an apparent visual magnitude of 5.43.[2] This object is located at a distance of 189 light-years from the Sun, based on its parallax,[1] and is drifting further away with a radial velocity of +11 km/s.[5] It has an absolute magnitude of 1.59.[2]
This object is an aging G-type giant star with a stellar classification of G8III.[3] Having exhausted the supply of hydrogen at its core, it has expanded and cooled off the main sequence; at present it has 6.5[1] times the girth of the Sun. The star has 1.6[2] times the mass of the Sun and is radiating 24[1] times the Sun's luminosity from its swollen photosphere at an effective temperature of 5008 K.[1] These coordinates are a source for X-ray emission, which is most likely (99.3% chance) coming from the star.[8]
References
[edit | edit source]- ^ a b c d e f g h i j k l Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value). Gaia DR2 record for this source at VizieR.
- ^ a b c d e f g Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ a b c Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
